Implement enum synthesis from union

A union which has enumerations with a common base as members can
be transformed to an equivalent enumeration.

1 files changed, 33 insertions, 0 deletions

diff --git a/xsd-frontend/transformations/enum-synthesis.hxx b/xsd-frontend/transformations/enum-synthesis.hxx
new file mode 100644
index 0000000..e3c38c7
--- /dev/null
+++ b/xsd-frontend/transformations/enum-synthesis.hxx
@@ -0,0 +1,33 @@
+// file      : xsd-frontend/transformations/enum-synthesis.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2006-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_FRONTEND_TRANSFORMATIONS_ENUM_SYNTHESIS_HXX
+#define XSD_FRONTEND_TRANSFORMATIONS_ENUM_SYNTHESIS_HXX
+
+#include <cult/types.hxx>
+
+#include <xsd-frontend/semantic-graph/elements.hxx> // Path
+#include <xsd-frontend/semantic-graph/schema.hxx>
+
+namespace XSDFrontend
+{
+  namespace Transformations
+  {
+    using namespace Cult::Types;
+
+    // This transformation replaces unions of one or more enumerations
+    // with the same base with an equivalent synthesized enumeration.
+    // This transformation assumes that there are no anonymous types.
+    //
+    class EnumSynthesis
+    {
+    public:
+      Void
+      transform (SemanticGraph::Schema&, SemanticGraph::Path const&);
+    };
+  }
+}
+
+#endif // XSD_FRONTEND_TRANSFORMATIONS_ENUM_SYNTHESIS_HXX